Skip to main content

Cyclomydril Side Effects

Generic name: cyclopentolate / phenylephrine ophthalmic

Medically reviewed by Drugs.com. Last updated on Mar 27, 2022.

Note: This document contains side effect information about cyclopentolate / phenylephrine ophthalmic. Some dosage forms listed on this page may not apply to the brand name Cyclomydril.

Applies to cyclopentolate / phenylephrine ophthalmic: ophthalmic solution.

You should not receive this medicine if you have untreated narrow-angle glaucoma.

Get emergency medical help if you have any of these signs of an allergic reaction while taking cyclopentolate / phenylephrine ophthalmic: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have:

  • blurred vision, tunnel vision, or seeing halos around lights;

  • eye pain;

  • fast heart rate, severe headache, pounding in your neck or ears, anxiety;

  • fever;

  • little or no urinating;

  • flushing (warmth, redness, or tingly feeling);

  • severe constipation; or

  • weak or shallow breathing.

Infants and children may be more likely to have side effects from cyclopentolate and phenylephrine ophthalmic. Tell the doctor if the child has:

  • confusion, changes in behavior, hallucinations;

  • speech problems, trouble recognizing people;

  • restless or excited behavior;

  • loss of balance or coordination;

  • seizure (convulsions); or

  • feeding problems or loss of appetite.

Common side effects may include:

  • dry mouth, nose, or throat;

  • decreased sweating; or

  • sensitivity to sunlight.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.

More about Cyclomydril (cyclopentolate / phenylephrine ophthalmic)

Patient resources

Professional resources

Related treatment guides

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.